Fix warnings and code cleanup/fixes (#13570)

Content.Client/UserInterface/Systems/Actions/ActionUIController.cs

@@ -886,7 +886,6 @@ public sealed class ActionUIController : UIController, IOnStateChanged<GameplayS
     /// If currently targeting with no slot or a different slot, switches to
     /// targeting with the specified slot.
     /// </summary>
-    /// <param name="slot"></param>
     public void ToggleTargeting(TargetedAction action)
     {
         if (SelectingTargetFor == action)
@@ -952,7 +951,7 @@ public sealed class ActionUIController : UIController, IOnStateChanged<GameplayS
         _targetOutline?.Disable();
         _interactionOutline?.SetEnabled(true);
 
-        if (!_overlays.TryGetOverlay<ShowHandItemOverlay>(out var handOverlay) || handOverlay == null)
+        if (!_overlays.TryGetOverlay<ShowHandItemOverlay>(out var handOverlay))
             return;
 
         handOverlay.IconOverride = null;

Content.Client/UserInterface/Systems/Actions/Widgets/ActionsBar.xaml

@@ -1,7 +1,6 @@
 <widgets:ActionsBar
     xmlns="https://spacestation14.io"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:in="clr-namespace:Content.Shared.Input;assembly=Content.Shared"
     xmlns:widgets="clr-namespace:Content.Client.UserInterface.Systems.Actions.Widgets"
     xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Actions.Controls"
     VerticalExpand="False"